Add matriculation number

[teekoksiang]

• Add and edit matriculation number of a resident.
• Display the matriculation number of residents.
• Add MatriculationNumber unit test.

Show matriculation number in the resident list

Display error when the matriculation number is invalid

[yanchenglee98]

LGTM. Apart from some straggling debug statements and nits, work is of top quality. 👍

[codecov-io]

Codecov Report

Merging #66 into master will decrease coverage by 1.91%.
The diff coverage is 81.25%.

@@             Coverage Diff              @@
##             master      #66      +/-   ##
============================================
- Coverage     72.31%   70.39%   -1.92%     
- Complexity      400      413      +13     
============================================
  Files            70       73       +3     
  Lines          1228     1314      +86     
  Branches        124      136      +12     
============================================
+ Hits            888      925      +37     
- Misses          308      353      +45     
- Partials         32       36       +4     

Impacted Files	Coverage Δ	Complexity Δ
.../java/seedu/address/logic/commands/AddCommand.java	100.00% <ø> (ø)	8.00 <0.00> (ø)
.../java/seedu/address/model/util/SampleDataUtil.java	20.00% <0.00%> (ø)	1.00 <0.00> (ø)
src/main/java/seedu/address/ui/PersonCard.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...eedu/address/model/person/MatriculationNumber.java	80.00% <80.00%> (ø)	6.00 <6.00> (?)
...c/main/java/seedu/address/model/person/Person.java	95.74% <81.81%> (-1.82%)	23.00 <1.00> (+2.00)	⬇️
...java/seedu/address/logic/commands/EditCommand.java	95.94% <90.00%> (-1.07%)	12.00 <0.00> (ø)
...a/seedu/address/logic/parser/AddCommandParser.java	100.00% <100.00%> (ø)	5.00 <0.00> (ø)
...ain/java/seedu/address/logic/parser/CliSyntax.java	85.71% <100.00%> (+2.38%)	1.00 <0.00> (ø)
.../seedu/address/logic/parser/EditCommandParser.java	93.10% <100.00%> (+0.79%)	12.00 <0.00> (+1.00)
...in/java/seedu/address/logic/parser/ParserUtil.java	97.56% <100.00%> (+0.33%)	16.00 <2.00> (+2.00)
... and 5 more

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